drm/nouveau: Add proper vgaarb support.

Signed-off-by: Marcin Kościelnicki <koriakin@0x04.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_state.c b/drivers/gpu/drm/nouveau/nouveau_state.c
index fcd7610817a1..a4851af5b05e 100644
--- a/drivers/gpu/drm/nouveau/nouveau_state.c
+++ b/drivers/gpu/drm/nouveau/nouveau_state.c
@@ -310,6 +310,14 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
 static unsigned int
 nouveau_vga_set_decode(void *priv, bool state)
 {
+        struct drm_device *dev = priv;
+        struct drm_nouveau_private *dev_priv = dev->dev_private;
+
+        if (dev_priv->chipset >= 0x40)
+                nv_wr32(dev, 0x88054, state);
+        else
+                nv_wr32(dev, 0x1854, state);
+
         if (state)
                 return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
                        VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;